Product Description
Meet the workhorse S400 you build around: the BORGWARNER 171701 S400SX4 (S471/96) with a 1.32 A/R divided T6 housing. It’s a proven AirWerks journal-bearing charger that shines as a high-fuel single or as the atmospheric unit in S300/S400 compounds.
Why builders choose 171701
- S471 compressor — ~71mm inducer, extended-tip aero; ~5.0" hose inlet, 4.21" V-band outlet
- 96mm turbine — paired with a 1.32 A/R, twin-scroll T6 housing and ~5.75" Marmon outlet
- AirWerks center section — twin hydrodynamic journal bearings; adjustable compressor/turbine orientation
Fitment & Use Cases
Platforms: Popular in high-output Cummins, Power Stroke, and Duramax builds as a big-power single. Excels as the atmospheric charger feeding an S300 high-pressure turbo in compound systems.
Checklist: Verify divided T6 manifold, downpipe connection (~5.75" Marmon), charge-pipe routing, oil feed/return, intercooler capacity, and overall fueling/tuning for your goals.
Cross-Reference / Alternatives (BorgWarner on CPP Diesel)
- BorgWarner 171702 — S475/96, 1.32 A/R, T6
- BorgWarner 177287 — S480/96, 1.32 A/R, T6
- BorgWarner 177248 — S471/83, 1.10 A/R, T4
- BorgWarner 169012 — S464/83, 1.10 A/R, T6
- BorgWarner 176806 — S475/83, 1.10 A/R, T4
Commonly used around ~500–1050+ HP depending on displacement, cam, fueling, intercooler efficiency, and overall setup.
Will it bolt to my factory manifold?
Not directly. This turbo uses a divided T6 inlet. Plan for a T6 manifold and a compatible downpipe (~5.75" Marmon).
Streetable as a single?
With stock fueling it will spool later than an S300 or small S400. With proper fueling and tuning it’s a strong big-power single; it also excels as the atmospheric charger in compounds.
Specifications for BORG WARNER 171701
| Turbo Series | AirWerks S400SX4 (S471/96) |
| Compressor | ~71mm inducer (S471), ~5.0" hose inlet, 4.21" V-band outlet |
| Turbine | 96mm wheel, 1.32 A/R, divided T6 housing, ~5.75" Marmon outlet |
| Center Section | Twin hydrodynamic journal bearings; adjustable housing orientation |
| GTIN | Not provided by manufacturer |
| UPC | 121A001467 |
| E-Codes | Not applicable (universal performance/HD use) |
| Cross Reference | BorgWarner alternatives on CPP Diesel: 171702, 177287, 177248, 169012, 176806 (see links above). Verify interchange to your build before purchase. |
| Shipping Info | Free Shipping; typical carton ~16" × 15" × 15" (see product page for live details) |
| Prop 65 | Warning may apply (nickel and other metals). See California Proposition 65. |
Note: Always match BorgWarner P/N 171701 and verify manifold, downpipe, oiling, and charge plumbing for your specific application.
